I'm looking for basically any MMO that is free and fun to play. Games I have played so far:

GoonZu
Space Cowboy Online
Kal Online
Silkroad Online
Rakion
Gunbound
Anarchy Online
WarRock Online
Hero Online
BOTS (acclaim)
2moons
Legend of Ares
GunZ Online
MapleStory
Runescape
FlyFF
MU Online
Risk Your Life 1/2
Deicide Online
Rose Online
Knight Online
Fairyland
City of Heroes

Ty in advance.